Here you can find information about IQMT, an open
source Framework for Automatic MT Evaluation which incorporates a rich
set of metrics operating at several linguistic levels (lexical,
syntactic and semantic) based on different similarity assumptions.
IQMT has been
developed at TALP Research Center NLP group , in Universitat Politècnica
de Catalunya.

Thus,
if you improve the software, either adding new
functionalities, fixing bugs, or adding new metrics,
you can not distribute them under different conditions than those
stated in the license (i.e. freely and with no usage restrictions).

If you want that your changes and improvements become useful to
many other people using this free software, please contact us:

References

Please reference this tool in your academic works citing the following
paper: